The world’s biggest blue star sapphire – weighing in at 1,404.49 carats – has been found in a mine in Sri Lanka. Gemologists in Colombo say the gem is worth at least $100 million, but could sell for ...

The world's biggest blue star sapphire was recently found in a Sri Lankan mine, weighing an astonishing 1,404 carats. The owner, who remains anonymous, of the rare sapphire has valued the gem at over ...

Rubies and sapphires of exceptional provenance and signed jewels were among the top lots at Bonhams New York Fine Jewelry sale on Tuesday. This is to be expected at a Bonhams sale, as the auction ...